New PRI Middlesex
The design is the first in the UK to have below ground – no maintenance – regulators. This has resulted in excellent sound attenuation and noise reduction which, coupled with no joint breaking for maintenance, is a major step forward in PRI design. The in-built ability to switch between alternate supply systems enables the network operator to maximise available diurnal storage capacity by ‘linepack’ which frees up conventional storage by low pressure gas holders.
Being an old (1850s until 1970) gas-producing works meant there was potentially serious contamination present. RCS were part of the team, during construction, which ensured that no contaminated material left site. All contaminated spoil was treated with bio agents to make it acceptable for re-use as backfill material. The project received commendation for its environmental aspects.